Page:The Mexican Problem (1917).djvu/145

Rh The contracts for the "tops" or distillate call for barrels of fifty-gallon capacity.

To date the Mexican Petroleum Company has produced about eighty million barrels of oil, of which more than fifty-five million barrels have come from the Casiano well at a pressure of two hundred and sixty-five pounds and with the valve unchanged during the seven years of its operation and the pressure —undiminished and Cerro Azul is younger and greater, but can be more closely shut in.